| 摘要 |
<p>PURPOSE:To obtain a negative one-times output voltage in addition to two-times positive and negative voltage with the same number of elements as before by charging a voltage obtained by boosting input voltage to voltage of a first capacitor to a second capacitor and by transferring the voltage of the first capacitor to a third capacitor. CONSTITUTION:When switches S11 and S12 are turned on, voltage Vcc is charged to a capacitor C11 in polarity which is shown in Figure. When only switches S13 and S14 are turned on, voltage is charged in polarity which is shown in Figure and voltage 2Vcc is obtained at an output terminal 9. When switches S15 and S16 are turned on, voltage of the capacitor C11 is transferred to the capacitor C12 and voltage Vcc is charged to that capacitor C13 in polarity which is shown in Figure, thus obtaining voltage -Vcc at an output terminal 10. When only switches S17 and S18 are turned on voltage obtained by adding voltage between the capacitor C11 to -Vcc which is being applied to a terminal 11 is applied to a capacitor C14, thus obtaining voltage -2Vcc at a terminal 12.</p> |
